| Zephyrhills to Olympia (Washington) | 2,538.67 mi (4,085.60 km) |
| Zephyrhills to Olympia Heights (Florida) | 207.57 mi (334.05 km) |
| Zephyrhills to Omaha (Nebraska) | 1,192.57 mi (1,919.26 km) |
| Zephyrhills to On Top of the World Designated Place (Florida) | 60.11 mi (96.74 km) |
| Zephyrhills to Onalaska (Wisconsin) | 1,191.13 mi (1,916.93 km) |
| Zephyrhills to Oneida (New York) | 1,087.51 mi (1,750.18 km) |
| Zephyrhills to Oneonta (New York) | 1,059.76 mi (1,705.51 km) |
| Zephyrhills to Ontario (California) | 2,122.14 mi (3,415.25 km) |
| Zephyrhills to Ontario (Oregon) | 2,203.70 mi (3,546.51 km) |
| Zephyrhills to Opa-locka (Florida) | 200.46 mi (322.61 km) |
| Zephyrhills to Opelika (Alabama) | 359.87 mi (579.15 km) |
| Zephyrhills to Opelousas (Louisiana) | 616.44 mi (992.06 km) |
| Zephyrhills to Orange (California) | 2,134.25 mi (3,434.74 km) |
| Zephyrhills to Orange (Texas) | 710.27 mi (1,143.06 km) |
| Zephyrhills to Orange City (Florida) | 72.28 mi (116.33 km) |
